Assionob



W. FUHRMANN.

SIGNAL PRINTING MEANS FOR CALCULATORS.

APPLICATION FILED NOV. 5. I9I8.

Patented Aug. 12, 1919.

APPLICATION FILED NOV. 5. I9I8.4

Patented Aug. 12, 1919.

2 SHEETS-SHEET 2.

` UNITED sT N. Y., A. CORPORATION OFNEW YORK.

TEs PATENT oEEIoE. WARREN EomaNN, or WEsTFIELD, NEW iEBSEY, AssIGNon, BY nEsNE n'ssIciN'-` MENTS, To WILKINSON normas AND CONPANY, ;tNconromTEn, or NEW Toux,

SIGNAL PRINTING' MEANS FB 'specmatio ofI-ttm'het Patented Aug. 12,1919.

appueaaon and November t, 191s. semi 'Na-261,1.

To all whom t may concern.'

Be it known that L'WARREN FUHBMANN, a citizen of the United States, residing at Westfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Si ing Means for Calculators, of which the following is a specification.

This invention relates to calculators 'provided with means whereby special operations are performed by the main operating mem- A ber or handle upon previously depressing a special key, and which machines usually serve Vto print a character to indicate the special operation of the machine. The object of the present invention is to provide special means for this purpose, wherein on depression of a special key a printing member is first positioned, and on further depression of the key a previously cockedl hammer is tripped to make the impression. Y

In the accompanying drawings illustrating one embodiment of my invention, Figure 1 is a side elevation of the parts in normal position. Fig. 2 is a fragmentary elevation showing the first operation when the key is partly depressed. Fig. 3 shows the parts just after the impression has been lmade on full depression of the key. Fig. 4 shows means for cooking the hammer. Fig. 5 shows the latter-means in operation. Fig. 6 is a partial section-on the line 6-6 of Fig; 1. Fig. 7 shows `the latch. Fig. 8 shows the hammer.' Figs. 9 and 10 show the lever for cooking the hammer. Fig. 11 shows the arm foi` tripping the latch; and Fig. 12 sliows the latch arm for the cooking lever.

This invention is in the nature of an improvement on the structure forming sumect matter of U. S. Patent No. 1,182,532. In such patent a bar' is engaged by the special keys to be shifted rearwardly to set the type arm, and a secondbar is swung on the other bar, to be later engaged by the same key and rocked, to trip the cocked hammer. lIn the present invention this second bar -1s mounted independent of the other bar and is slidable, to be engaged by the depressed key at the latter portion of its movement, and advanced to trip the cocked hammer, l

As shown in the drawings, on the side `plate 1 is a bar 2 supported to slide back and cam faces forth, which bar is provided with al Print- 4 and 5. .Four special keys 4are shown 6,

7, 8 Aand 9 provided with pins 10, 11 respectively; ywhich pins are adapted gage the said cam faces on the bar 2, and

orce the bar rearward. A spring 14 on the arm 15 thatI supportsthe rear .of the bar 2,

to enf serves to move'the bar forward when re' leased from Athese keys.

A type carrier 16 issup-ported from an I arm 17 hinged to the arm 15 whereby the rearward movement of the barby the depression of a. key will swing arms 15 and 17 to raise the carrier 16. ,The cam faces are .so designed thateaoh key will shift the bar a different distance, and hencebring one of the three lower type on the carrier oppositethe platen 18, according to which key is depressed. The carrier is normally posiu tione'd with the fourth type opposite a striking hammer 19, and the depression of Aone of the three keys will raise the ca rrierto bring the corresponding type in position'to beA struck by this hammer. When the fourth key 9 is depressedjthe hammerl is actuated but the carrier not moved. g

The hammer 19, see Fig. 4,1has an arm 20 arranged to engagea latch 21 that will hold the hammer in a cocked position under spring tension. The latch21 is secured to a latch .arm 22 that normally lies adjacent a trip arm 23, see Fig. 6, which arm is'y iv'oted on a bar 24, suitablymountedto s li e rearward. This bar- 24 -isrovided with -.four cam faces 25, 26, 27 andJ 28, arrangedt'o be engaged by the said-pins on the four keys, after the pins, l to engage the bar 2 Vand moveit rearward.

or three of them have served Each of. the three keys 6, 7 or 8 Awhen depressed will shift bar 24 to the rear, .and the trip arm 23 will strike the latch arm 22,

whereby the latch 21 will move back to release the 'arm 20 of the hammer, and the latter is caused-l to strike the positioned t pe. in the carrier.'` It, will be understood t at.

depression of either keys 6, 7 or 8 will first position the carrier' 16 to bring one of the three lower type to printing position', and

thereupon ,the` cont nued depression of this key will cause-the bar 24 to move rearward and release the'v hammer 19 that will make theimpression. e

takes place at .once lon the full depression ,1025I A It is tobe understood that this operation .of the key, and previous to any movement of the main -operatmg member of the machine, or advance of the usual pitman 29.

This latter 4member is emplo ed to reset hammer 19 on its forward stro e.

hammer has been .tri ped, see Fig. 4, 4this movement of these evers will swin the hammer 'back to the osition of Fig. 5, whereby the arm 20 of t e Ihammer is caused 'to rel-atch on the latch 21. This hammer will remain latched during subsequent movements ofthe pitman and levers 30 and 33, that will not move the latch 21, until a key is depressed and the bar 24 moved rearward. In vmachines of this character the .Special keys are held depressed until the pitman moves forward and returns nearly to Anormal position. This would interfere with the latching of the hammer because of the engagement of the latch arm 22 withthelbar 24, -by means of the ltrip |arm 23 thereon. For this reas'on the trip arm 23 is pivoted on the bar 24. When the pitman moves forward a cam 36 will strike an -ear 37 on the trip arm 23,- a-nd raise the bent end 38 of the triparm above the projecting end 39 of the latch arm 22. See Fig. 6. This will permit theilatch ar-m and latch 21 to be returned to normal position by a spring 40; which is done just prior to the movement of the levers 30 and 33 to move the hammer back to cockingposition, that will permit the yarm 20 to agaln engage the latch 21. As soon as the cam starts to return the trip arm 23 will return to normal position to engage the latch arm 22 when the special key 1s again depressed.

When released from the key pins, the barl 24 is retracted by a spring 42, extended between a pin 41 on the/bar and a'pin 43 on the side frame.

What I claim is 1. In a calculator, the combination with printing means land accumulating means, and special keys arranged to cause special operations of said means, vof a type carrier provided with type corresponding with the. keys, a bar connected with the carrler, means connecting the -bar and special keys whereb the bar is advanced by the keys for a di ferent relative distance according to the key `depressed, a signal printing member for causing said type in the carrier to print,

a maln operating member arranged to cock' the signal printing member, and a strip arranged to release the cocked signal printin member to print, said strip bemg arran to be engaged by said special keys when de .the advance of the typle pressed after the key has advanced said bar toposition the signal printing member to effect the impression ofthe positioned type 0 carrier. For thls purpose a'lever 30 is carried by an arm 31 2. In a calculator, the combination with printing means and accumulating means, and special keys arranged -to cause special operations of sai-d means, of a type carrier provided with type corresponding with the eys, a pin on each key, al bar connected with the carrier and provided with cam shoulders arranged to be engaged by the key pins respectively whereby the bar is advancedv for a different `relative dist-ancel according to the key depressed, a signal printingv member` for causing sald type in the carrier to print, a main operating member arranged -to cockv the slgnal printing member, anda strip arranged to release the cocked signal printing member to print, said lstrip beingarranged to be engaged by said key pins after the key has advanced said bar to sition the signal printing member to e ect the impression of the p0- sitioned type carrier.

3. Ina, calculator,` the combination with printing means andaccumulating means, and special keys arranged to cause special operations of said means, of a type carrier rovided with type corresponding with the eys, a pin on each ke ,a bar connected with the carrier and provi ed with cam shoulders arranged to be engaged by the key pins respectively whereby the bar is advanced for a different relativefdistance according to the key depressed, asigna] printing member for fcausing said type 1n the carrier to print, a

main operating member arranged to cock the signal printing member, and a slidable strip arranged to release the cocked signal printing member to print, said strip being provided with cam shoulders arranged to be engaged by the said key pins after the key has advanced the bar printing member, to effect .the impression of the positioned type carrier.

4. In a calculator, the combination with printlng means and accumulating means,

and special keys arrangedto cause special operations of t e said means, of a type carmer provided with type corresponding with the keys, means connected with the carrier and said keys whereby on depression of the keys thel carrier is positively -moved thereby'to position the type according to the key depreed, signal printing means for causing said type in .the carrier to print, a main operating member arranged to cock the signal printing member, and a member engaged by said special keys when depressed an' arranged to release said cocked signal printing member after the key has caused carrier whereby to e type in the posicause impression of t tioned carrier.

to position the signal f 'said bar to position the signal 5. In a calculator, the combination with printing means and accumulating means, and special keys arranged to cause special operations of said means, of a type carrier rovided with type corresponding with the eys, a bar connected with the carrier, means connecting the bar and s the bar is advanced by t e keys for a dierent relative distance according to the key depressed, a signal printing member for causing said type in the carrier to print, a

Amain operating member arranged to cock the signal printing member, and a strip arranged to release the cocked signal print ing member to print, said strip being arranged to be engaged by said special keyswhen depressed after the key has advanced rinting member to effect the impression of he positioned ty carrier, said signal printin means inc uding a latch arm, a latch pivote on said strip arranged to engage said arm when the strip is advanced by the key,

. whereby to effect the impression, and means for swinging said latch after the printing member has been tripped and before release of the key. v

6. In a calculator, the combination with printing means and accumulating means,

ecial keys whereby `key depressed, a signal printing mem and special keys arranged to cause special operations of said means, of a type carrier provided with type corresponding with the eys, a pin on each key, a bar connected with the carrier and provided with cam'shoulders varranged to be enga ed by the key pins respectively whereby t a different relative distance accordino the r for causing said type 1n the carrier to print, a main operating member arranged to cock the signal printing member, and a slidable strip arranged to release the cocked signal printing member to print, said strip being provided with cam shoulders arranged to e engaged by the said key pins after the key has advanced the bar to ifposition the signal printing member, to e ect the impression of the positioned type carrier, said signal .printing means including a latch arm, a latch piv'oted on said strip arranged to engage'said arm when the stri is vadvanced by the key, whereby to e ect the impression, and means for swinging said latch after the printing member has been tri ped and before release of the key.

igned at New York city, N. Y. on Oct.'

- WARREN FUHRMANN.

e bar is advanced for 

